27 lines
599 B
Plaintext
27 lines
599 B
Plaintext
func pi(callback) {
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var (q, r, t, k, n, l) = (1, 0, 1, 1, 3, 3)
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loop {
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if ((4*q + r - t) < n*t) {
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callback(n)
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static _dot = callback('.')
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var nr = 10*(r - n*t)
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n = ((10*(3*q + r)) // t - 10*n)
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q *= 10
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r = nr
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}
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else {
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var nr = ((2*q + r) * l)
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var nn = ((q*(7*k + 2) + r*l) // (t*l))
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q *= k
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t *= l
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l += 2
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k += 1
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n = nn
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r = nr
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}
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}
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}
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STDOUT.autoflush(true)
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pi(func(digit){ print digit })
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